You must be very careful before using this command! Doing so
erases the entire memory, which includes all user and special
codes. In addition, all codes are returned to their factory
default settings.
To return to factory default settings:
1. Enter Programming mode.
2. Press "0" to enter Menu 0.
The Transmit LED and the Program LED
flash red.
3. Enter your 4-digit Programming code.
If the Programming code is valid, all memory is erased. You hear
three beeps and the controller returns to Normal mode.
If the Programming code is invalid, you hear a long beep and the
controller returns